IWM 预期波动历史 iShares Russell 2000 ETF
每个交易日收盘后，我们记录期权市场对各到期日的定价——均在结果揭晓前留存。到期日过后，实际结果会附记于原始预估值旁。预估值在事后绝不修改。 如何解读这些统计数据 · 记录开始于 Aug 31, 2026
已解决的比较项3
收盘价处于区间内67%
|实际值| 低于预期值67%
平均预期波动幅度±0.3%
平均|实际|波动幅度0.4%
平均绝对误差0.2pt
隐含与已实现波动率，按到期日
每个到期日：琥珀色轮廓框为最接近到期时记录的预期涨跌幅；实心柱为股票实际涨跌幅。柱形下方标注带符号的具体数值。
预期（已记录）实际
已记录（等待结果）
| 快照 | 到期时间 | DTE | 当时现货价 | 预期涨跌幅 | 区间 | 方法 |
|---|---|---|---|---|---|---|
| Sep 02 | Sep 02 | 0 | 293.82 | ±0.1% | 293.67–293.97 | em-1.0 |
| Sep 01 | Sep 02 | 1 | 290.67 | ±0.7% | 288.62–292.71 | em-1.0 |
| Aug 31 | Sep 02 | 2 | 293.93 | ±0.8% | 291.47–296.39 | em-1.0 |
| Sep 02 | Sep 03 | 1 | 293.82 | ±0.7% | 291.88–295.76 | em-1.0 |
| Sep 01 | Sep 03 | 2 | 290.67 | ±1.1% | 287.60–293.75 | em-1.0 |
| Aug 31 | Sep 03 | 3 | 293.93 | ±1.1% | 290.76–297.10 | em-1.0 |
| Sep 02 | Sep 04 | 2 | 293.82 | ±1.1% | 290.67–296.98 | em-1.0 |
| Sep 01 | Sep 04 | 3 | 290.67 | ±1.5% | 286.33–295.01 | em-1.0 |
| Aug 31 | Sep 04 | 4 | 293.93 | ±1.4% | 289.83–298.02 | em-1.0 |
| Sep 02 | Sep 08 | 6 | 293.82 | ±1.4% | 289.77–297.87 | em-1.0 |
| Sep 01 | Sep 08 | 7 | 290.67 | ±1.8% | 285.49–295.86 | em-1.0 |
| Aug 31 | Sep 08 | 8 | 293.93 | ±1.6% | 289.13–298.73 | em-1.0 |
| Sep 02 | Sep 09 | 7 | 293.82 | ±1.6% | 289.25–298.39 | em-1.0 |
| Sep 01 | Sep 09 | 8 | 290.67 | ±1.9% | 285.03–296.31 | em-1.0 |
| Aug 31 | Sep 09 | 9 | 293.93 | ±1.8% | 288.70–299.16 | em-1.0 |
| Sep 02 | Sep 10 | 8 | 293.82 | ±1.7% | 288.74–298.90 | em-1.0 |
| Sep 01 | Sep 10 | 9 | 290.67 | ±2.1% | 284.55–296.79 | em-1.0 |
| Aug 31 | Sep 10 | 10 | 293.93 | ±1.9% | 288.29–299.57 | em-1.0 |
| Sep 02 | Sep 11 | 9 | 293.82 | ±2.0% | 287.88–299.76 | em-1.0 |
| Sep 01 | Sep 11 | 10 | 290.67 | ±2.4% | 283.79–297.56 | em-1.0 |
| Aug 31 | Sep 11 | 11 | 293.93 | ±2.2% | 287.57–300.29 | em-1.0 |
| Sep 02 | Sep 14 | 12 | 293.82 | ±2.2% | 287.42–300.23 | em-1.0 |
| Sep 01 | Sep 14 | 13 | 290.67 | ±2.5% | 283.32–298.02 | em-1.0 |
| Aug 31 | Sep 14 | 14 | 293.93 | ±2.3% | 287.13–300.73 | em-1.0 |
| Sep 02 | Sep 15 | 13 | 293.82 | ±2.4% | 286.84–300.80 | em-1.0 |
| Sep 01 | Sep 15 | 14 | 290.67 | ±2.7% | 282.81–298.53 | em-1.0 |
| Sep 02 | Sep 16 | 14 | 293.82 | ±2.6% | 286.05–301.59 | em-1.0 |
| Sep 02 | Sep 18 | 16 | 293.82 | ±2.9% | 285.26–302.38 | em-1.0 |
| Sep 01 | Sep 18 | 17 | 290.67 | ±3.2% | 281.25–300.08 | em-1.0 |
| Aug 31 | Sep 18 | 18 | 293.93 | ±3.0% | 285.15–302.70 | em-1.0 |
已归档快照
| 快照 | 已到期 | 预期值 | 实际值 | 在区间内？ | 现货价 → 收盘价 |
|---|---|---|---|---|---|
| Sep 01, 2026 | Sep 01 | ±0.2% | -0.0% | 区间内 | 290.67 → 290.57 |
| Aug 31, 2026 | Sep 01 | ±0.6% | -1.1% | 区间外 | 293.93 → 290.57 |
| Aug 31, 2026 | Aug 31 | ±0.0% | +0.0% | 区间内 | 293.93 → 293.93 |
结果通过比较记录的价格区间与到期日收盘价得出。各行显示所用方法版本（与当前版本不同时）；当前版本： em-1.0.